Digital Stroboscope Kit, Includes AC Power Adapter, Resolution 0.01 fpm, Digital Display Screen Type LCD, Maximum Flashes per Minute 500,000 fpm, Minimum Flashes per Minute 30 fpm, Maximum Flash Duration 3,000 usec, Power Source Battery, Calibration Certificate Type NIST, Phase Shift No Phase Shift, External Triggers No External Triggers Included, Body Style Full Size, Battery Run Time 10 hr, Accuracy 0.0001, Manufacturer Warranty Length 1 yr, Batteries Included Yes